"4 x 2 V-groove wheel 3/4"" RB"
4 x 1-3/8 inch sintered iron (semi-steel) wheel
4 x 2 Solid Steel wheel 5/8 RB
4 x 2 cast-iron wheel 3/4 RB
4 x 1-1/2 Lava wheel 3/4 RB
4 x 1-1/2 Lava wheel 1-3/16 plain bore
4 x 1-1/2 High-temp phenolic wheel 3/4 RB
4 x 1-1/2 High-temp phenolic wheel 1-3/16 plain bore
